—The pollution problem here seems to get more and more serious.--Yes. Something_____about it.
#76572
A
must do
B
must be done
C
is doing
D
had been done
推荐题目
---.Look! It _____be your uncle .----It_____ be him . He has gone to Xi’an.
#75921
A
can, mustn’t
B
can , can’t
C
must, can’t
D
must, may
Today is Wednesday. He _______be at home. He _______be at school.
#75246
A
can't; can
B
can't; must
C
mustn't; must
D
mustn't; can
The art exhibition is really worth _______，and you’re sure to learn lot from it.
#77411
A
visit
B
to visit
C
visited
D
visiting